Book: Chapter 11 Questions

Question 1

Cystic fibrosis is caused by a mutation in a gene that encodes a(n)
A) type of collagen
B) enzyme involved in the synthesis of the amino acid glutamine
C) chloride ion channel
D) enzyme involved in the catabolism of the amino acid phenylalanine
E) structural component of red blood cells

Answer 1

C) chloride ion channel

Question 2

A “true-breeding” plant variety produces offspring that are exactly like the parent. Genetically, true-breeding individuals are always
A) dominant
B) homozygous
C) recessive
D) heterozygous
E) wild type

Answer 2

B) homozygous

Question 3

The law of segregation states …
A) The factors segregate (separate) during the formation of the gametes.
B) Each gamete contains two factors from each pair of factors.
C) Each individual has three factors for each trait.
D) Fertilization gives each new individual one factor for each trait.
E) Children that share the same parents will have the same alleles.

Answer 3

A) The factors segregate (separate) during the formation of the gametes.

Question 4

In humans, red-green color blindness is an example of a(n)
A) autosomal recessive trait
B) codominant trait
C) autosomal dominant trait
D) Y-linked recessive trait
E) X-linked recessive trait

Answer 4

E) X-linked recessive trait

Question 5

What is a graphical representation of the inheritance pattern of a single trait in a family called?
A) DNA fingerprint
B) pedigree
C) metabolic pathway
D) Punnett Square
E) karyotype

Answer 5

B) pedigree